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[目的]研究思茅松子代测定林各家系幼龄期和中龄期的生长表现差异,为思茅松的早期选择提供依据。[方法]对幼、中龄期思茅松生长的方差分析结果、变异系数和家系材积t检验结果进行比较。[结果]幼、中龄期思茅松子代测定林各家系的生长表现有较大差异。17年生的中龄期思茅松的胸径和材积表现稳定。幼年期思茅松的胸径、树高和材积在重复间和家系间都表现出显著或极显著的差异,但在两组中的显著性程度不一致。中龄期思茅松的胸径和材积的生长差异明显仅存在于家系间,树高在重复间和家系间都存在极显著差异。幼-中龄各家系的变异系数存在差异。中龄期家系的t值明显比幼龄期大。[结论]可通过分析17年生思茅松的胸径和材积来判断其生长的优劣,从而选出优良家系。
[Objective] The research aimed to study the difference of growth performance of young and middle-aged of each line of Pinus sylvestris var. Korshinskii in determining the early selection of Pinus kesiya sinensis. [Method] The results of variance analysis, variance coefficient and peduncle t-test of growth of young and middle-aged Pinus kesiya var. [Result] The growth performance of each line in the young and mid-age Pinus kesiya progenies was quite different. 17-year-old middle-aged pine cedar diameter and volume stability. The DBH, tree height and volume of juvenile Pinus kesiya showed significant or extremely significant differences between repeat and pedigree, but the discrepancy was not significant in both groups. The growth difference of DBH and volume of middle-aged Pinus kesiya obviously only existed in the pedigree, and there was a significant difference in tree height between the repeat and the pedigree. There are differences in the coefficient of variation between young and middle age families. The t-value of the middle age family was significantly larger than that of the younger age. [Conclusion] The good and bad of growth can be judged by analyzing the diameter and volume of 17-year-old Chinese pine.